sherry 
Dear all, I am trying to write program to write and read data from uart or serial port but I am stuck with 2 Isuues like 1) in Cannonical mode it need hit enter key (carriage return) to read data... 2) In raw mode data can be read within fixed interval or less 255 characters ... so my question that I want to receive any time data with respect to timeout or and special character(like carriage return) if any one have faced this issue and solved let me know